DFU Update says zip file not supported

[rider]

I'm trying to apply a firmware update using a zip file that has worked with older version of nRF Toolbox. Using the current version, (4.1.1) on iOS, I select DFU, then select my zip file under User Files. When I press Done, I get a popup saying "DFU -- Selected file is not supported".

Any ideas what to do? It's not my file, and I didn't have any development role, so I'm just trying to figure out how to apply the update.

Any help would be really appreciated.

The zip file: IRT_V2_REV_A1_C_1_0_39.zip

[daniel]

That's so great, it worked perfect for me. how do you create the zip file from the hex file ?

Thanks, Danny